Neck emission of intermediate-mass fragments in the fission of hot heavy nuclei

Journal Article · Mon Dec 28 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.69.3713· OSTI ID:6898351

Fields, D E; Kwiatkowski, K; Morley, K B; Renshaw, E; Wile, J L; Yennello, S J; Viola, V E ^[1]; Korteling, R G ^[2]

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1. Departments of Physics and Chemistry and Indiana University Cyclotron Facility, Indiana University, Bloomington, Indiana 47405 (United States)
2. Department of Chemistry, Simon Fraser University, Burnaby, British Columbia (Canada)

An unusual low-energy component has been observed in the spectrum of equilibriumlike intermediate-mass fragments (IMFs) emitted from systems formed in high-linear-momentum-transfer reactions of 270-MeV [sup 3]He with [sup 232]Th. The properties of this component include strong focusing of IMFs at an angle perpendicular to the fission fragment separation axis, kinetic energies about one-half those for normal IMFs, and a preference for neutron-excess fragments. This behavior is consistent with emission of IMFs from the neck region of a fissioning nucleus.

• OSTI ID: 6898351
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:26; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

663440 -- D-
T-
& He-induced Reactions & Scattering-- (1992-)
663470* -- Fission-- (1992-)
663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ANGULAR DISTRIBUTION
BERYLLIUM 10
BERYLLIUM 7
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORON ISOTOPES
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY RANGE
ENERGY SPECTRA
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FISSION
HELIUM 3 REACTIONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
LITHIUM 6
LITHIUM 7
LITHIUM ISOTOPES
MEV RANGE
MEV RANGE 100-1000
NUCLEAR FRAGMENTATION
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
TARGETS
THORIUM 232 TARGET
YEARS LIVING RADIOISOTOPES